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首页> 外文期刊>Journal of Asian earth sciences >Interseismic fault slip deficit and coupling distributions on the Anninghe-Zemuhe-Daliangshan-Xiaojiang fault zone, southeastern Tibetan Plateau, based on GPS measurements
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Interseismic fault slip deficit and coupling distributions on the Anninghe-Zemuhe-Daliangshan-Xiaojiang fault zone, southeastern Tibetan Plateau, based on GPS measurements

机译：基于GPS测量

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摘要

The Anninghe-Zemuhe-Daliangshan-Xiaojiang (AZDX) fault zone is an important boundary between the South China block and southeastern (SE) Tibetan Plateau. Its strong earthquake potential has been highly concerned, because remarkable left lateral strike-slip motion has been observed in this fault zone. Using the linear spherical block model constrained by a refined GPS horizontal velocity field, we have derived the detailed partial slip deficits and the coupling fraction distributions along the AZDX fault zone, as well as self-consistent long-term slip rates on major active faults in SE Tibetan Plateau. Our results identified three remarkable slip deficit regions with high fault coupling fractions (0.6-1.0), including the southern segment of the Anninghe Fault (north of Xichang), the southern segment of the Daliangshan Fault (Butuo-Qiaojia), and southern terminus of the Xiaojiang Fault. These regions spatially coincide with the seismic gaps inferred from the spatiotemporal distributions of historical earthquake ruptures and paleoearthquake surveys, jointly implying their higher strong earthquake potential. Furthermore, combining with analyses of GPS data, previous geological and numerical simulation studies, we tentatively discussed the possible effect range of the Burma arc tectonic domain.
机译：安宁河Zemuhe-Daliangshan-Xiaojiang（AZDX）断层区是华南区块和东南（SE）藏高原的重要边界。其强烈的地震潜力得到了很大的关注，因为在该断层区域中已经观察到了显着的左侧滑动运动。使用由精制GPS水平速度场约束的线性球形块模型，我们沿AZDX断层区域衍生了详细的部分滑移缺陷和耦合分量分布，以及在主要的主动故障上的自我一致的长期滑移速率SEIBETAN高原。我们的结果确定了具有高故障耦合分数（0.6-1.0）的三个显着的滑动缺陷区域，包括南宁故障（西昌北部）的南部，达祥山断层（Butuo-Qiaojia）和南端末端小江断裂。这些地区与从历史地震破裂和古老地震调查的时空分布推断出地震间隙，联合意味着它们较高的地震潜力。此外，结合了GPS数据的分析，先前的地质和数值模拟研究，我们暂时讨论了缅甸弧构造域的可能效果范围。

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  • 来源
    《Journal of Asian earth sciences》 |2021年第1期|104899.1-104899.12|共12页
  • 作者

    Li Yuhang; Hao Ming; Song Shangwu; Zhu Liangyu; Cui Duxin; Zhuang Wenquan; Yang Fan; Wang Qingliang;

  • 作者单位

    China Earthquake Adm State Key Lab Earthquake Dynam Inst Geol Beijing Peoples R China|China Earthquake Adm Monitoring & Applicat Ctr 2 Xian Peoples R China;

    China Earthquake Adm State Key Lab Earthquake Dynam Inst Geol Beijing Peoples R China;

    China Earthquake Adm State Key Lab Earthquake Dynam Inst Geol Beijing Peoples R China;

    China Earthquake Adm State Key Lab Earthquake Dynam Inst Geol Beijing Peoples R China;

    China Earthquake Adm State Key Lab Earthquake Dynam Inst Geol Beijing Peoples R China;

    China Earthquake Adm State Key Lab Earthquake Dynam Inst Geol Beijing Peoples R China;

    China Earthquake Adm State Key Lab Earthquake Dynam Inst Geol Beijing Peoples R China;

    China Earthquake Adm State Key Lab Earthquake Dynam Inst Geol Beijing Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    The Tibetan Plateau; GPS; Interseismic crustal deformation; Seismic potential;

    机译：藏高平台;GPS;志反兴地壳变形;地震潜力;

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